Comparison

Impôts vs Prefecture Alerts

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Impôts

Easily calculate your income tax with this application. Input your net taxable income, and it will compute your total tax liability and breakdown for each tax bracket. The simulator uses tax brackets set by the Ministry of Economy.

Highlights
  • Calculate income tax
  • Tax bracket breakdown
  • Based on Ministry of Economy data
  • Simulates tax liability
Features
Read full description

Grâce à l'application Impôts, calculez facilement votre impôt sur le revenu. Saisissez votre revenu net imposable et nous calculons votre impôt sur le revenu total et pour chaque tranche imposable. Le simulateur d'impôt sur le revenu est basé sur les tranches d'imposition fixées par le Ministère de l'Économie. Cette application n'est pas une application officielle et les chiffres ne sont qu'à titre indicatifs.

About

Prefecture Alerts

This app monitors prefecture websites across France for available appointment slots. It notifies users immediately via push, SMS, or email when a slot opens, saving them the time of manual checking. Users select their prefecture and appointment type to begin receiving alerts.

Highlights
  • Monitors over 120 prefectures and appointment types
  • Instant notifications via Push, SMS, or Email
  • Saves time by eliminating manual website refreshing
  • Supports various appointment types (residence permit, driver's license, etc.)
  • Fast and reliable slot detection
Features
Read full description

Make scheduling prefecture appointments easier than ever with "Préfecture Alerts". Instead of constantly reloading prefecture websites hoping for free slots, let us do the work for you. We monitor over 120 prefectures and appointment types across France, and notify you immediately when a slot becomes available — via Push, SMS, or Email. How it works: - Select your prefecture + the type of appointment (residence permit, driver’s license, naturalization, etc.). - We periodically check the official prefecture site. - As soon as a new appointment slot opens up, we send you a notification. - You just click through, and book it yourself on the prefecture’s platform. Why choose Préfecture Alerts? - Save hours of refreshing and checking manually. - Reliable, fast updates: we aim to detect new slots as soon as they’re released. - Support for many prefectures & appointment types. - Notifications through multiple channels so you don’t miss your chance. French: Avec Alertes Préfecture, fini de passer des heures à vérifier les sites préfectoraux pour trouver un rendez-vous libre. Nous surveillons plus de 120 préfectures et types de rendez-vous en France pour vous avertir instantanément lorsqu’un créneau de rendez-vous est disponible — par Push, SMS ou Email. Comment ça marche : - Choisissez votre préfecture et le type de rendez-vous qui vous concerne (titre de séjour, permis de conduire, naturalisation, etc.). - Nous vérifions régulièrement le site officiel de la préfecture. - Dès qu’un créneau apparaît, vous recevez une notification. - Vous cliquez, vous réservez directement sur le site de la préfecture. Pourquoi utiliser Alertes Préfecture ? - Vous gagnez du temps : plus besoin de recharger sans cesse le site. - Alertes rapides : dès qu’un créneau est publié, vous êtes informé. - Large couverture : de nombreuses préfectures et types de RDV pris en charge. - Notifications multiples : Push, SMS, Email, pour ne rien manquer. * Subscription required for some features such as SMS and Email Alerts. Terms of Service: https://pref-rdv.com/terms Privacy Policy: https://pref-rdv.com/privacy

Screenshots

Impôts3 screens
Prefecture Alerts4 screens

Verdict

The call

The clearest difference is in-app purchases: Impôts at none against Prefecture Alerts's 2. Impôts also leads on review sentiment (50% vs 22%) and device support (3 vs 1). Prefecture Alerts's advantage is update cadence (fortnightly vs every 4 months). On price and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Prefecture Alerts sells 2 in-app purchases, starting at $4.99 per 7 days. Impôts asks for nothing beyond the download.

UpkeepUpdate frequency

Impôts ships an update every 4 months, Prefecture Alerts fortnightly. The most recent releases landed on September 9, 2026 and August 24, 2026 respectively.

Scorecard6 real differences · 4 level
Impôts versus Prefecture Alerts: the parameters behind the verdict, then further details
ParameterImpôtsPrefecture Alerts
PriceFreeFree
Rating—4.0 (4 ratings) — better
Positive reviews50.0% of reviews — better22.2% of reviews
Number of ratings—4 — better
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS11.0 — better16.0
Further details — not scored
Size14 MB13 MB
Age rating4+4+
DeveloperJulien KermarecGCO Apps

Customer experience

Impôts

Written reviews6 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Prefecture Alerts

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews9 reviews
Positive22.2%
Neutral0.0%
Negative77.8%

In-app purchases

None

Impôts

No in-app purchases

2 purchases

Prefecture Alerts

Subscriptions2
  • Premium (Weekly, 3 Days Trial)3 Days trial$4.997 Days
  • Monthly Subscription$9.991 Month

Questions

Is Impôts free?
Impôts is free to download, with no in-app purchases.
Is Prefecture Alerts free?
Prefecture Alerts is free to download, with in-app purchases available.
Do Impôts or Prefecture Alerts have ads?
Neither Impôts nor Prefecture Alerts shows ads.
Which is updated more often, Impôts or Prefecture Alerts?
Impôts ships an update every 4 months, and Prefecture Alerts fortnightly. Most recently, Impôts was updated on September 9, 2026 and Prefecture Alerts on August 24, 2026.

Other comparisons